This is about Great Britain Exist from EU. Also i explained political behinds

8. Brexiteers have argued that Britain is now free to
take back control of its borders in order to curb
immigration and increase security.
The UK will no longer have to accept ‘free
movement of people’ from Europe if this country
leaves the EU's single market.
But the EU has said that Britain will have to allow
the free movement of EU workers if it decides to
stay in the internal market.
Mrs May has reject the Brexit campaign's pledge
to introduce an ‘Australian-style points system’ to
manage immigration and fill skill shortages here.
Pro-EU campaigners believe that Brexit will hit
the British economy, which relies on the free
movement of EU migrant workers such as health
professionals.

12. • Investors are worried about the possible
economic impact of a decision to leave the
EU.
• The Sterling Pound is falling against all
major currencies.
• It was down by 2% against US Dollar and
hit the lowest since 2009.
• It’s dropped 1.3% lower against the Euro.